High resolution ultraviolet spectroscopy of SO2 in a cold supersonic beam is reported. The behavior of single rovibronic lines of the E band (305 nm) and the 322 nm band was investigated in an electric field of up to 12 kV/cm. The dipole moment of the 1 A1 state was determined to be 1.85 (0.03) D. Problems of the dipole determination in SO2 are discussed.
Articles you may be interested inSolvent effects on the absorption and fluorescence spectra of quinine sulphate: Estimation of ground and excited-state dipole moments AIP Conf.Determination of electric dipole moments on S02 molecules in the region of the A IA2 and jj I B I states is reported. The Stark splittings and shifts of single rovibronic lines in several vibronic bands were measured by high-resolution laser spectroscopy in a supersonic molecular beam. Electric-field strengths of up to 12 kV /cm were applied. The dipole moment of the A IA2 state was determined to be 1.79(5) D, whereas an indication of a clearly smaller dipole moment was found for the jj IBI state.
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